Fair Value Measurements Fair Value, Assets Measure on Recurring Basis, Unobservable Inputs,Gain (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Domestic Collateralized Debt Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
Total gains for the period in earnings
Change in unrealized losses for the period included in comprehensive net income	314		(1)
Mortgage Servicing Rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
Total gains for the period in earnings	200	[1]	58	[1]
Change in unrealized losses for the period included in comprehensive net income

[1] included in mortgage origination and loan servicing fees in the consolidated statements of operations.